问题
选择题
The traffic rule says young children under the age of five and _______ less than 25 kilograms must be in a child safety seat.
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答案
答案：D
考查非谓语动词。动词weigh称起来为，不及物动词，没有被动语态，所以在题中作定语时，用weighing，修饰young children，故选D。